随着电力系统向高度电力电子化方向的趋势发展，对电磁暂态建模仿真方法的通用性和仿真效率提出了更高的要求。目前常用的仿真模型中，详细模型仿真效率低，难以适应大规模系统；平均值模型忽略了系统内部的暂态特性，仿真精度较差；等效模型的通用性较差，难以适应电力电子拓扑的多样性。针对上述问题，本文提出了一种N端子电力电子设备通用等效建模方法，不仅适用于任意电力电子拓扑，具有较高的通用性，而且利用消去模型内部节点的思想以及设计的多设备并行仿真算法，在保证精度的前提下提升了仿真效率。

With the increasing power-electronization of modern power systems, higher demands are placed on the generality and computational efficiency of electromagnetic transient modeling and simulation methods. Among existing approaches, detailed models suffer from low simulation efficiency and are unsuitable for large-scale systems; average-value models compromise simulation accuracy by neglecting internal transient characteristics; while equivalent models lack sufficient generality to accommodate diverse power electronic topologies. To address these challenges, this paper proposes a universal equivalent modeling method for N-terminal power electronic devices. The proposed approach not only demonstrates high versatility by being applicable to arbitrary power electronic topologies, but also significantly improves simulation efficiency through internal node elimination and a specially designed parallel simulation algorithm, while maintaining required accuracy.